First of all you have to believe that you are above material goods
Ask yourself, "Do I really need this thing?"
If the answer is "No", get rid of it.
You can sell or give your extra stuff to someone who need it
Think about the advantages, cleaning is easier with less stuff
**When shopping ask again "Do I really need this thing?" and "How long I'm gonna use it?" **
If you keep your stuff in order you will find when you need it easily
When you don't buy anything you don't need you can save money to buy better quality things and this will improve your life